Hi there @Remwan
Welcome to the community! Feel free to Introduce yourself 🙆 if you feel like it!
It seems like for some reason your install may be corrupted? That error comes from our logging service so we can know when things go wrong, but should definitely exist 
Do you have any other connectors installed? Are they all in the same version? I’m thinking maybe the Revit plugin is conflicting with the Dynamo one… Do upgrade everything to the same version if this is the case.
Also, can you try uninstalling it an re-installing it again? Something may have gone wrong during an update
Lastly, could you let us know what version of Speckle Manager and connectors you have installed?
Thanks for reporting this 